Based in Daisen City, Akita Prefecture, Kinmon Akita Sake Brewery has made "aging" a keyword in its product development, offering old sake and new types of sake. In 2009, the company won the Champion Sake in the sake category at the International Wine Challenge (IWC) held in England, and has continued to win medals since then.
In 2018, an aged old bottle of "Yamabuki 42 years (720 ml)" sold for about 320,000 yen at an auction held in London and was highly appreciated by the global market.
Edgy concepts of sake are the essence of Kinmon Akita Brewery, such as the "X3 Series," which includes aged sake aged in oak, cherry, and chestnut barrels and using three times the amount of koji rice than usual.